Your cart is empty
Tax included and shipping calculated at checkout
YOELEO Altera G21 DB Gravel Bike Frameset
The YOELEO Altera G21 DB is a UCI-approved carbon gravel frameset built for riders who want one bike that handles everything from fast tarmac to rough backcountry. Constructed from High Modulus Toray 800 carbon fiber, it pairs a slacker headtube and longer wheelbase with integrated storage, generous tire clearance up to 700×53 mm (or 650B×2.1"), and a threaded T47 bottom bracket for serviceable, long-haul reliability.
Supplied as a complete frameset — G21 frame, fork, H21 integrated carbon handlebar, and the new round-profile Pro-Flex seatpost — the Altera G21 is a true platform: pick your groupset, pick your wheels, and build the bike you actually ride.
YOELEO Altera G21 — Features & Benefits
- Gravel-optimized geometry: slacker headtube angle, longer wheelbase, shorter stem — more stability on rough terrain, no toe overlap.
- Integrated frame storage: sealed compartments in the top tube and down tube (with a built-in bag) keep essentials out of sight and out of your pockets.
- Huge tire clearance: up to 700×53 mm or 650B×2.1" on a single-chainring setup — from fast gravel to chunky singletrack.
- Threaded T47 bottom bracket: bonded aluminum shell molded into the frame for tight alignment, long service life, and a lighter build than press-fit.
- UDH-ready dropout: Universal Derailleur Hanger fits SRAM UDH and mainstream groupsets — and the hanger is replaceable after a bad day.
- H21 integrated cockpit: 15.2° flared carbon bar (400/420/440 mm) with stem lengths from 80–110 mm, clean fully-internal cable routing.
- Pro-Flex round seatpost: 27.2 mm round profile absorbs road buzz and opens the door to third-party posts or even a dropper.
- Mount-ready frame: 4 bottle mounts, mudguard compatible, cargo rack compatible — ready for bikepacking duty.
- 7 sizes (45–60 cm): wide size range dials in fit for riders across the spectrum.
- 6-year warranty: from the factory, with a lifetime-warranty upgrade available at checkout.
Fit note: Send us your height, inseam, current bike size, and riding goal and we'll help you dial in the right frame size.
YOELEO Altera G21 — Specifications
Frame Details
- Type: UCI-approved carbon gravel frameset
- Material: High Modulus Toray 800 carbon fiber
- Colours: Artisan Black, Prism Blue
- Sizes: 45 / 49 / 52 / 54 / 56 / 58 / 60 cm
- Headtube: Straight 1-1/2"
- Bottom bracket: T47 inboard bearing (86.5 mm) — fits Shimano GRX 24 mm, SRAM DUB / DUB wide, SRAM GXP
- Rear dropout: 12×142 thru-axle
- Derailleur hanger: Universal (UDH), replaceable
- Brake fitment: Flat Mount Disc
- Cable routing: Fully internal
- Bottle mounts: 4
- Mudguard / cargo rack: Compatible
- Max tire clearance: 700×53 mm or 650B×2.1" (1× setup)
- Chainring: Max 42T normal crank, 44T wide crank (1× setup)
- Frame weight (56 cm): 1170 g painted, 1150 g raw
- Rider weight limit: 125 kg
- Warranty: 6 years (Lifetime upgrade available)
H21 Integrated Carbon Handlebar
- Type: One-piece carbon integrated handlebar + stem
- Widths: 400 / 420 / 440 mm
- Stem lengths: 80 / 90 / 100 / 110 mm
- Flare: 15.2° for confident drop-bar control on rough terrain
- Weight: 360 ± 15 g (420 × 90 mm)
- Routing: Fully internal
- Alternate option: ST1 stem + H25 drop bar combo available at checkout
Fork, Seatpost & Included Parts
- Fork steerer: 1-1/8" — 1-1/2" tapered
- Front axle: 12×100 thru-axle
- Fork weight (56 cm, painted): 484.4 / 478.8 / 477.6 / 479.5 / 482.1 g (size-dependent)
- Seatpost: Yoeleo Pro-Flex, 27.2 mm round
- Seatpost weight: 95.2 g (without clamp)
- Included in the box: Frame, fork, H21 integrated handlebar, Pro-Flex seatpost, 1× front axle, 1× rear axle, headset bearing cap (10 mm), handlebar spacers (3 mm ×1, 5 mm ×1, 10 mm ×2)
